| 1. | All these patterns of agriculture operate within the context of the global ecosystem .
所有这些农业类型，都在全球生态系统的范围内产生作用。 |
| 2. | The species that make up natural ecosystems usually display a wide range of genetic variability .
构成自然生态系统的生物种，通常表现有较大范围的遗传变异性。 |
| 3. | The plants of natural ecosystems are usually well adapted to the edaphic and climatic character of their region .
自然生态系统的植物，通常十分适应当地的土壤和气候特点。 |
| 4. | Aquatic ecosystems share a number of basic structural and functional characteristics with terrestrial ecosystems .
水生生态系统的结构和机能，在许多基本特征方面同陆地生态系统一样。 |
| 5. | Forest ecologists have been more concerned than agronomists with the inner mechanisms of natural and artificial ecosystems .
森林生态学家比农学家更关心天然生态系统和人工生态系统的内部机制。 |
| 6. | Accumulation of toxic substances in the biosphere is causing serious changes in the structure and function of natural ecosystems .
生物圈内有毒物质的积累，造成了天然生态系统的结构与功能的严重变化。 |
| 7. | Figure 1 shows an example of an sca ecosystem
图1显示了sca生态系统的一个示例。 |
| 8. | Impacts of greenhouse effect on freshwater ecosystem
温室效应对淡水生态系统的影响 |
| 9. | The structural research on brand economy on ecosystem
基于生态系统的品牌经济结构研究 |
| 10. | Energy is the currency of the ecological system
能量是生态系统的货币。 |
